Turkish Neurosurgery
Ghrelin Alleviates Spinal Cord Injury in Rats Via Its Anti-inflammatory Effects
Mehmet Erşahin 2, Hale Zerrin Toklu3, Can Erzik4, Dilek Akakın5, Şermin Tetik6, Göksel Şener3, Berrak Çağlayan Yegen1
1Marmara University School of Medicine, Department of Physiology, Istanbul,
2Samsun Education and Research Hospital, Department of Neurosurgery, Samsun,
3Marmara University, School of Pharmacy, Department of Pharmacology, Istanbul,
4Marmara University, School of Medicine, Department of Medical Biology, Istanbul,
5Marmara University, School of Medicine, Department of Histology & Embryology, Istanbul,
6Marmara University, School of Pharmacy, Department of Biochemistry, Istanbul,
DOI: 10.5137/1019-5149.JTN.4736-11.0

Aim:Spinal cord injury (SCI) leads to an inflammatory response that generates substantial secondary damage within the tissue besides the primary damage. Ghrelin, 28 amino-acid peptide, has been shown to modulate the release of proinflammatory cytokines and exert anti-inflammatory effects. The aim of the current study was to investigate the anti-inflammatory effects of ghrelin, in a rat model of SCI.Material and Methods:Rats were divided as control, SCI, and ghrelin-treated (10 µg/kg/day, ip) SCI groups. In order to induce SCI, a standard weight-drop method that induced a moderately severe injury (100 g/cm force) at T10, was used. Injured animals were given either ghrelin or saline 15 min post-injury. Results:In plasma samples, neuron-specific enolase (NSE) and S-100 protein levels were evaluated. Spinal cord samples were taken for histological examination or determination of myeloperoxidase (MPO) activity and DNA fragmentation. SCI caused significant increases in plasma NSE and S-100 levels and tissue MPO activity and DNA damage. On the other hand, ghrelin treatment improved histological findings as well as biochemical parameters while it failed to improve the impairment of the neurological functions due to SCI.Conclusion:The present study suggests that ghrelin could reduce SCI-induced oxidative stress and exert anti-inflammatory effects in the spinal cord following trauma.

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